Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e8d2569c632a39…

MALICIOUS

PDF

33.3 KB Created: 2020-08-26 09:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 619b507c1db62d070349efa0a99c4242 SHA-1: 681d8f9f36bf1f9314df771cf89e23fe627ac039 SHA-256: 54e8d2569c632a39761e360ab573dc462e096ad44e6e00b0a9c2768fc417b9ae
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The embedded URL 'https://ttraff.link/pify?keyword=bergey%2527s+manual+of+determinative+bac' is a key indicator of this redirection attempt. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to a manual, aligning with the redirection's purpose. The presence of numerous external PDF links further supports the 'PDF_SEO_LINK_FARM' finding, indicating an attempt to manipulate search results or distribute malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/pify?keyword=bergey%2527s+manual+of+determinative+bac
    • http://files.lowellhighextra.net/uploads/1/3/0/7/130776042/zegopozolus.pdf
    • http://files.stjohnspreschoolseaford.com/uploads/1/3/1/4/131483305/448576.pdf
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/98028637189.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/91819570984.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/john_eldredge_captivating.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/52601850207.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/zotixidegeje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/86765849718.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/runarepidavarujev.pdf
    • https://cdn.shopify.com/s/files/1/0438/9077/0088/files/43767574866.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000440e.bin
7738ecec53bd4c5655ea1b862d26d2beb362add0cbbcd9e0c5837edacd0ab7dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x440E 5724 bytes
font_01_sfnt_off00005784.bin
d89bab10fd70ce9189d1e40b39a6226dd608d6cc1b9643b2f491e687ae1db684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5784 9784 bytes

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